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当前位置: 首页 > 文章 > 不同种子处理方法对铁刀木种子萌发的影响 四川林业科技 2009,30 (2) 33-36+6
Position: Home > Articles > Effects of Storage Conditions and Sowing Methods on Seed Germination of Cassia Siamea L. Journal of Sichuan Forestry Science and Technology 2009,30 (2) 33-36+6

不同种子处理方法对铁刀木种子萌发的影响

作  者：
林开文;苏光荣;郭永杰;王正良;杨清
单  位：
中国科学院西双版纳热带植物园;西南林学院;云南省景洪市林业局
关键词：
铁刀木;种子;浓硫酸;温水浸泡;萌发率;发芽势;萌发天数
摘  要：
铁刀木是一种多用途树种,广泛分布于东南亚国家和中国的云南、广东、广西和福建等地。种子种皮透水性差,必须经过适当处理提高种皮透性才能萌发。本文对铁刀木种子自然储藏特性与种子萌发方法进行试验,结果表明:铁刀木新鲜种子的发芽率可达95%以上,随着储藏时间的增加,其发芽率逐渐降低,储存3个月后,种子发芽率迅速降低,其发芽率只有75%,储存9个月后种子发芽率只有30%左右。在有光条件下的发芽率和发芽势明显高于不需光条件处理,萌发天数比不需光条件下的萌发天数缩短了38.6d。采用破伤种皮、用80℃温水浸泡20min和80%硫酸浸泡种子15min处理对铁刀木种子萌发均有促进作用,与对照相比,发芽势明显提高,萌发天数明显缩短。特别是80%硫酸浸泡和破伤种皮在缩短萌发天数更为明显,比对照缩短了120d以上。由于破伤种皮比较费时费力,因此,在进行铁刀木种子育苗时,一般不宜采用。采用80%硫酸浸泡种子15min或80℃温水浸种30min,可有效提高种子萌发的整齐度和缩短发芽时间。
译  名：
Effects of Storage Conditions and Sowing Methods on Seed Germination of Cassia Siamea L.
作  者：
LIN Kai-wen1 SU Guang-rong2 GUO Yong-jie3 WANG Zheng-liang3 YANG Qing3(1.Southwest Forestry University,Kunming 650224,Yunnan Province,China;2.Forestry Department of Jinghong City,Xishuangbanna 666100,yunnan,China;3.Xishuangbanna Tropical Botanic Gardens,Chinese Academy of Science,Menglun 666303,Yunnan,China)
关键词：
Cassia siamea L.,Seed,Sulphuric acid,Warm water soaking,Germination rate,Germination velocity,Time of germination.
摘  要：
Cassia siamea Lamk.is a perennial multipurpose species,and widely distributed all over South-east Asia,and Yunnan,Guangdong,guangxi and Fujian of China.Water permeability of seed capsules is very bad,thus improving the water permeability can promote the germination of seeds.The seeds had been treated with different methods in the storage period.The results showed that the germination rate of fresh seeds was more than 95 %,and the germination rate decreased with the increase of storage time.The germination rate was 75 % after 3 months of storage,and the germination rate was about 30 % after 9 months of storage.The germination rate of light requirement treatment is more than that of non-light treatment,and the days of germination were shortened by 38.6 days.The seeds were separated,and soaked for 20 minutes in water of 80℃ and soaked for 15 minutes in 80 % H2SO4,being most favorable to breaking the seed dormancy,improving the seed germination rate and shortening the germination days.Especially the seeds soaked in 80% H2SO4 and the separated seeds would evidently shorten the germination days,decreasing by more than 120 days in comparison with the control group,so the seed soaked for 20 minutes in water of 80℃ or for 15 minutes in 80 % H2SO4 was most appropriate.It could effectively improve the germination rate and germination vigor,and shorten the germination days.

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